Marinate asparagus in Italian dressing over night, or at least three to four hours. Cook macaroni according to package directions, drain. Rinse with cold water, drain again. In bowl, blend mayonnaise, ketchup, horseradish, mustard and scallions. Toss in macaroni, ham, celery, and eggs (if desired). To serve, arrange asparagus spears on platter. Top with macaroni salad. Garnish with watercress and cherry tomatoes.
Makes 6 servings.
Cajun Country -- New Iberia, Louisiana